Point (2,0) Is Not a solution. The solution to this system is (0,2). The point (2,0) is not in contact with any line. Since (x,y) Is how the formula is, and the solution is on the y line not the x.
Given that: f(1)=13 and 2f(n-1)+(n-2) then: f(4) will be found as follows: f(2)=2f(2-1)=2f(1)=2*13=26 f(3)=2f(3-1)+(3-2)=2f(2)+1=2*26+1=53 f(4)=2f(4-1)+(4-2)=2f(3)+(4-2)=2(53)+2=108
A brownie costs $3.45, an ice cream costs $2.43, and a cookie costs $0.95. So $3.45 + $2.43 + $0.95 = $6.83. If you need to know the change if they paid with $10.00 also . . . That would be $10.00 - $6.83 = $3.17 change.